3 × 7 × 193 × 5279

Prime Factor Structure

Factorization String 3 × 7 × 193 × 5279

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 32,778,240

Proper Divisor Sum 11,382,453

Digit Sum / Digital Root 42 (Root: 6)

Adjacent Primes #21395783 ← → #21395791

1 3 7 21 193 579 1,351 4,053 5,279 15,837 36,953 110,859 1,018,847 3,056,541 7,131,929 21,395,787

Iterative sequence n → n/2 (if even) or 3n+1 (if odd):

21,395,787 64,187,362 32,093,681 96,281,044 48,140,522 24,070,261 72,210,784 36,105,392 18,052,696 9,026,348 4,513,174 2,256,587 6,769,762 3,384,881 10,154,644 5,077,322 2,538,661 7,615,984 3,807,992 1,903,996 951,998 475,999 1,427,998 713,999 2,141,998 1,070,999 3,212,998 1,606,499 4,819,498 2,409,749 7,229,248 3,614,624 1,807,312 903,656 451,828 225,914 112,957 338,872 169,436 84,718 42,359 127,078 63,539 190,618 95,309 285,928 142,964 71,482 35,741 107,224 53,612 26,806 13,403 40,210 20,105 60,316 30,158 15,079 45,238 22,619

Other feeder batches with open delivery windows. Each feeder keeps its own target batch.